/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.antgroup.geaflow.dsl.rel;

import com.antgroup.geaflow.dsl.common.exception.GeaFlowDSLException;
import com.google.common.collect.ImmutableList;
import java.util.List;
import org.apache.calcite.plan.RelOptCluster;
import org.apache.calcite.plan.RelTraitSet;
import org.apache.calcite.rel.RelNode;
import org.apache.calcite.rel.SingleRel;
import org.apache.calcite.rel.type.RelDataType;
import org.apache.calcite.sql.type.SqlTypeName;

public abstract class ConstructGraph extends SingleRel {

    protected final ImmutableList<String> labelNames;

    protected ConstructGraph(RelOptCluster cluster, RelTraitSet traits,
                             RelNode input, List<String> labelNames, RelDataType rowType) {
        super(cluster, traits, input);
        this.labelNames = ImmutableList.copyOf(labelNames);
        this.rowType = rowType;
        if (input.getRowType().getSqlTypeName() == SqlTypeName.PATH) {
            throw new GeaFlowDSLException("Illegal input type: "
                + input.getRowType().getSqlTypeName() + " for " + getRelTypeName());
        }
    }

    public ImmutableList<String> getLabelNames() {
        return labelNames;
    }
}
